Manual MCD
+
7.1.7 Reset
Input
If the input optocoupler is energized, all error signals and the ring counter are reset. Then,
the ring counter is in basic position. Both motor phases are energized by the same current
value in basic position independent of the step resolution.
Fig. 26:
Motor phases in basic position (half step)
After cut-off the reset signal, the power stage will enable the ready signal after
approximately 500 ms.
7.2 Error Output
Open-Collector-Darlington output insulated by means of optocoupler.
I
max
= 20 mA, U
max
= 30 V, P
total
= 300 mW, UCE
sat
at 20 mA < 1 V
Fig. 27:
Output wiring diagram
Remark:
If inductive loads (e. g. a relay) are connected, a protective diode must be
mounted.
This output opens at the error messages: undervoltage, overcurrent/short circuit,
overtemperature. At the same time the driver is deactivated to avoid damages.
An error message can be reset after error elimination or cooling. The MCD can be reset by
the input Reset on X3 or in ServiceBus mode.
MA 2102-A005 GB
30
